School bell controller 24-250V AC / 30-300V DC Type: SDM-10/U EXT10000119

School Time Control – Reliable School Bell Controller SDM-10/U

The SDM-10/U school bell controller is an advanced device designed for automatic control of acoustic signaling in schools and other educational institutions. It enables precise management of class time, programming breaks, and triggering alarms, ensuring efficient organization of the learning day. The device is compatible with popular school bells, such as models DNT-212, DNS-212, DNT-212M and DNS-212M.

Versatility and functionality for installers and users

This two-module controller, mounted on a TH 35 rail, offers a wide range of configuration possibilities. Thanks to intuitive programming, you can easily set the class schedule, adjust the duration of lessons and breaks, and program alarm signals. Battery-powered settings retention guarantees that the program remains active even in the event of a power failure. Two independent control inputs allow for triggering additional functions or integration with external systems.

Key features and benefits:

• Flexible power supply voltage: The controller works with both 24÷250 V AC and 30÷300 V DC networks, making it easier to install in various facilities.
• Annual programming: The ability to program the schedule for the entire school year eliminates the need for frequent setting changes.
• Automatic time change: The function of automatic change between summer and winter time ensures accuracy and ease of use.
• Relay output: Two changeover contacts with a load capacity of 16 A / 4000 VA allow connection of various types of bells and signaling devices.
• Intuitive LCD display: A clear backlit amber display makes it easy to read information and configure the device.
• Battery backup: Ensures preservation of settings and current time even during a power outage – for 3 years for the clock and 10 years for the program.
• Expandability: The controller can be used as part of an electronic school paging system (EW-01).
• Safety: Compliance with standards PN-EN 60730-1; PN-EN 60730-2-1; PN-EN 61000-4-2,3,4,5,6,11 ensures safe operation.

Technical specification (for professionals):

Power supply voltage: 24 ÷ 250 V AC / 30 ÷ 300 V DC Rated frequency: 50 / 60 Hz Current consumption: 60 mA Number of channels: 1 Relay contact load capacity: 16 A / 4000 VA Operating temperature: -20 ÷ +60 °C Enclosure protection class: IP20 Mounting: TH 35 rail

The SDM-10/U controller is a reliable solution for schools looking for a modern time management system and improved safety for students and teachers. Its versatility and ease of use make it an ideal choice for both installers and end users.